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CN-224209531-U - Clamp for wedge-shaped workpiece

CN224209531UCN 224209531 UCN224209531 UCN 224209531UCN-224209531-U

Abstract

The application relates to the technical field of machining of mechanical parts, in particular to a clamp for wedge-shaped workpieces, which comprises a base, a supporting table, a clamping mechanism and a positioning supporting mechanism, wherein the clamping mechanism comprises a first clamping assembly and a second clamping assembly which are respectively provided with two clamping pieces, the two first clamping pieces of the first clamping assembly are respectively arranged on the base and are respectively positioned at two sides of a workpiece center-of-gravity end for clamping the workpieces, the two second clamping pieces of the second clamping assembly are respectively arranged on the table top of the supporting table and are respectively positioned at two sides of a workpiece non-center-of-gravity end for clamping the workpieces, the positioning supporting mechanism comprises a positioning supporting cylinder and a positioning supporting block, the positioning supporting cylinder is arranged on the table top of the supporting table, and a piston rod of the positioning supporting cylinder is connected with the positioning supporting block and is in butt joint with the bottom of the workpiece non-center-of-gravity end. The structure improves the clamping stability of the clamp on the wedge-shaped workpiece, and avoids the problem that the wedge-shaped workpiece is easy to deviate towards the center of gravity concentrated end in the processing process and even loose and fracture of the workpiece occur.

Inventors

  • CAI PEI

Assignees

  • 金智捷(东莞市)精密机械有限公司

Dates

Publication Date
20260508
Application Date
20250529

Claims (9)

  1. 1. The wedge-shaped workpiece clamp is characterized by comprising a base (1) for placing a workpiece, a supporting table (2) for supporting the workpiece, a clamping mechanism (3) for clamping the workpiece and a positioning supporting mechanism (4), wherein the supporting table (2) is arranged on the base (1), and the positioning supporting mechanism (4) is arranged on a table top of the supporting table (2); The clamping mechanism (3) comprises at least one first clamping assembly (31) and a second clamping assembly (32); The first clamping assembly (31) comprises two first clamping pieces, the two first clamping pieces are both arranged on the base (1) and are respectively positioned at two sides of the non-center-of-gravity concentrated end (B) of the workpiece to clamp the workpiece; the second clamping assembly (32) comprises two second clamping pieces, wherein the two second clamping pieces are arranged on the table top of the supporting table (2) and are respectively positioned at two sides of the workpiece center-of-gravity concentrated end (A) to clamp a workpiece; The positioning support mechanism (4) comprises at least one positioning support cylinder (41) and a positioning support block (42), the positioning support cylinder (41) is arranged on the table top of the support table (2) and is positioned in the middle of two second clamping pieces, a piston rod of the positioning support cylinder (41) is connected with the positioning support block (42), the positioning support block (42) is abutted to the bottom of the center-of-gravity concentrated end (A) of the workpiece, and the piston rod of the positioning support cylinder (41) penetrates through the table top of the support table (2) and is in sliding fit with the support table (2).
  2. 2. A wedge-shaped workpiece holder according to claim 1, wherein the positioning support block (42) has a truncated cone configuration.
  3. 3. The wedge-shaped workpiece fixture according to claim 1, wherein the number of the positioning support cylinders (41) and the number of the positioning support blocks (42) are two, and the positioning support cylinders (41) and the positioning support blocks (42) are arranged in a one-to-one correspondence.
  4. 4. A wedge-shaped workpiece holder according to claim 1, characterized in that the positioning support cylinder (41) is slidably arranged on the table top of the support table (2).
  5. 5. A wedge-shaped workpiece holder according to claim 1, wherein the positioning support cylinder (41) is in rotational connection with the positioning support block (42).
  6. 6. A wedge-shaped workpiece holder according to claim 1, wherein the abutment surface of the positioning support block (42) against the bottom of the workpiece centre-of-gravity concentration end (a) is provided with an anti-slip coating.
  7. 7. A holder for wedge-shaped workpieces according to claim 1, characterized in that the support table (2) is provided with an adjusting member, by means of which the support table (2) adjusts the distance between the table top of the support table (2) and the base (1).
  8. 8. The fixture for wedge-shaped workpieces according to claim 1, wherein the two first clamping pieces comprise a first clamping block (311) and a first air cylinder (312), the first air cylinder (312) is arranged on the base (1), the first clamping block (311) is fixedly connected with a piston rod of the first air cylinder (312), the first air cylinder (312) drives the first clamping block (311) to lift, and when the first air cylinder (312) drives the first clamping block (311) to fall, the first clamping block (311) presses down the non-gravity center concentrated end (B) of the workpiece.
  9. 9. The fixture for wedge-shaped workpieces according to claim 1, wherein the two second clamping pieces comprise a second clamping block (321) and a second air cylinder (322), the second air cylinder (322) is arranged on the supporting table (2), the second clamping block (321) is fixedly connected with a piston rod of the second air cylinder (322), the second air cylinder (322) drives the second clamping block (321) to lift, and when the second air cylinder (322) drives the second clamping block (321) to fall, the second clamping block (321) presses down the workpiece center-of-gravity concentration end (A).

Description

Clamp for wedge-shaped workpiece Technical Field The application relates to the field of machining, in particular to a clamp for wedge-shaped workpieces. Background Tool clamps play a critical role in modern manufacturing and are critical devices for securing, positioning, clamping or supporting workpieces and semi-finished products. The application range of the material is very wide from automobile manufacturing to aerospace and other fields. With the continuous development of mechanical processing technology, the design of the clamp is also innovating continuously so as to adapt to more complex and diversified processing requirements. Particularly in multi-axis CNC machining, because of the need to handle workpieces of various shapes and sizes, higher demands are placed on the versatility, stability and flexibility of the fixture, which makes the fixture one of the core tools for improving machining quality and efficiency. Currently, to meet different processing requirements, several conventional approaches are generally adopted in the industry. For example, for processing simple workpieces, the clamp directly fixes the workpieces on the workbench only through bolt fixing, a further improvement method is to provide a pressing mechanism and a supporting mechanism, wherein the pressing mechanism generally comprises an elastic piece and a clamping plate, the clamping plate is abutted against the workpieces through adjusting the elastic piece, so that the fixing of the workpieces is realized, and for the condition of multi-angle processing, a rotating mechanism is added into the clamp, so that the workpieces can be adjusted at multiple angles in the processing process. Then, even though the above method can solve the processing problem of a part of the workpiece, in the existing workpiece processing, there is a wedge-shaped workpiece with a structure having obvious size difference in the length direction, because the gravity center is biased to the big end, the small end contact surface is small, so that the structure is not stably placed and is easy to topple over, the existing clamp still has obvious defects when processing the wedge-shaped workpiece with unstable placement, especially when the gravity centers of two ends of the wedge-shaped workpiece are greatly different, the existing clamp is difficult to ensure the clamping stability of the workpiece, and the workpiece is easily biased to the gravity center concentration end in the rotating processing process, so that the risk of loosening or breaking the workpiece is further aggravated. This problem becomes more pronounced with the apparent size differences of wedge-shaped workpieces, severely affecting machining accuracy and safety. Disclosure of utility model In order to improve the clamping stability of the clamp to the wedge-shaped workpiece and avoid the problem that the wedge-shaped workpiece is easy to deviate to the center of gravity concentration end in the processing process and even loose and fracture of the workpiece occur, the application provides the clamp for the wedge-shaped workpiece. The application provides a clamp for wedge-shaped workpieces, which adopts the following technical scheme: A fixture for wedge-shaped workpieces comprises a base for placing the workpieces, a supporting table for supporting the workpieces, a clamping mechanism for clamping the workpieces, The clamping mechanism comprises at least one first clamping component and a second clamping component, wherein the first clamping component comprises two first clamping pieces, the two first clamping pieces are respectively arranged on the base and are respectively positioned at two sides of a non-center-of-gravity concentrated end of a workpiece to clamp the workpiece, the second clamping component comprises two second clamping pieces, the two second clamping pieces are respectively arranged on the table of the supporting table and are respectively positioned at two sides of the center-of-gravity concentrated end of the workpiece to clamp the workpiece, the positioning supporting mechanism comprises at least one positioning supporting cylinder and a positioning supporting block, the positioning supporting cylinder is arranged on the table of the supporting table and is positioned in the middle of the two second clamping pieces, a piston rod of the positioning supporting cylinder is connected with the positioning supporting block and is abutted to the bottom of the center-of-gravity concentrated end of the workpiece, and the piston rod of the positioning supporting cylinder penetrates through the supporting table and is matched with the table in a sliding mode. By adopting the technical scheme, firstly, the combination of the base and the supporting table provides a stable placing foundation for the wedge-shaped workpiece. Because the gravity center of the wedge-shaped workpiece is biased to the large end, the contact surface of the small end is smaller, and the sta